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Author Topic: Peter Davey Heater  (Read 490707 times)

NerzhDishual

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Re: Peter Davey Heater
« Reply #315 on: June 23, 2008, 12:10:30 AM »


@Storre:


Your link : http://idisk.mac.com/stevetorrence-Public?view=web works.

I got:
stevetorrence's Public Folder
Fabrizio e Steve
Some .mp3 -  Metal soul.... (for example)

How can I listen to these .mp3?

BTW: you are Italian. Are you not?
Se avessi avuto coraggio avrei potuto got better results with these Davey's things. :D

Best

.

NerzhDishual

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Re: Peter Davey Heater
« Reply #316 on: June 23, 2008, 12:39:35 AM »


Hi Devrim,

Nice so see you here. Yes, I do agree with all your 4 points!

Why am I keeping on making more experiments whitout having
even tried to measure any freq?

Frankly, I do not know... Perhaps because I'm lazy and I secretly expect to
come across something without too much 'left brain' work???
 

Best


storre

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Re: Peter Davey Heater
« Reply #317 on: June 23, 2008, 12:46:05 AM »
On the far right of the page are little download arrows. No I'm not italian :)

NerzhDishual

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Re: Peter Davey Heater
« Reply #318 on: June 23, 2008, 01:07:09 AM »
<OFF TOPIC>

@Storre

I finally managed to listen to you .mp3 files.

Very professional and elaborated. Who is playing the Sax?
"Into my old head Rendered" sounds "acousmatical" music.....
Why not having more used the Dijeridoo?
IMHO the end of this piece is a little bit "under instrumentalized".

This forum is definitely (also) a lair of musicians!.
I bet that NulPoins/Sandy/Dr R. (the bass player) would agree with that...


Best

Sprocket

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Re: Peter Davey Heater
« Reply #319 on: June 23, 2008, 04:44:47 AM »
@ND - Those are 'proper' bells you have there - nice!  I think you posted earlier that you use Cooledit 2000, if so, have you checked what your bells fundamental frequencies are?  A spectrum of their frequencies (Cooledit Analyzer function) would be cool to see!

@all - FWIW, I checked what would happen if a variable frequency/voltage squarewave, (555 timer with darlington driver - 10-30V @ 0.5A) was applied to my 'bell'.  Tried both bell frequencies and slow frequency sweeps in the hope of seeing something interesting - just a little bit of electrolysis, nothing more...  :'(

storre

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Re: Peter Davey Heater
« Reply #320 on: June 23, 2008, 01:11:23 PM »
@ NerzhDishual:
Yes off topic but thanks :) It's me playing sax, flute, didgeridoo and akai-ewi and clarinet. It was done in my studio but is not the final mix. Just some fun we have when we are not making fe machines :) They are all just improvs so what comes out comes out and we try not to mess with it too much afterwords. If you know about ayahuasca, that is the real name of the didgeridoo song that is a bit crazy and long :)

forest

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Re: Peter Davey Heater
« Reply #321 on: June 23, 2008, 09:31:07 PM »
I have found something which may be really usefull - egg shaped device for making tea. Something like this : http://www.naherbatke.pl/product.php?id=2503&categorie=119 but mine is a cheaper one, SS inox type, cheaper probably becouse of thinner walls.

Paul-R

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Re: Peter Davey Heater
« Reply #322 on: June 24, 2008, 04:13:25 PM »
I have found something which may be really usefull - egg shaped device for making tea. Something like this : http://www.naherbatke.pl/product.php?id=2503&categorie=119 but mine is a cheaper one, SS inox type, cheaper probably becouse of thinner walls.
I am working on soup ladles from cheap kitchen shops.
Don't forget that if they sound off just over G sharp (depnding on your country and AC),
then you will have to grind off a heck of a lot of metal to get down to the next G sharp (approx).
I have invested in a set of pitch pipes from a music shop. They give G, if not G sharp. People in
the shop will think you're daft, but uit saves a lot of grinding.
Paul.

forest

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Re: Peter Davey Heater
« Reply #323 on: June 24, 2008, 04:23:17 PM »
I am working on soup ladles from cheap kitchen shops.
Don't forget that if they sound off just over G sharp (depnding on your country and AC),
then you will have to grind off a heck of a lot of metal to get down to the next G sharp (approx).
I have invested in a set of pitch pipes from a music shop. They give G, if not G sharp. People in
the shop will think you're daft, but uit saves a lot of grinding.
Paul.

Thanks,but I only want it to be my casing. Inside I'd like to place a small bike bell.
I'm not sure if that resonance means the correct frequency match with mains or rather just a resonant cavity. I think rather about the last.I've found a patent describing generating very high pressure waves in single focal point using transducer with a shell concentrating sound waves in small point.It is stated that standing waves are produced.Unfortunately sound is generated by pulses of high energy HV from capacitor which seems to shake inner plate of transducer.I cannot imaging how it may happen with mains.Maybe there is a kind of spark gap inside water between each belles with some sharp edge which generates mechanical punches ?

forest

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Re: Peter Davey Heater
« Reply #324 on: June 24, 2008, 05:44:39 PM »
I've tested my device. No spectacular results. However two things are worth to note:
- current dropped during testing from 1.9 A to 1.1A continuously
- all my non SS connectors,nuts were corroded or rathe covered with kind of patina
- I saw a small bubbles coming out of my device near the connect point where the bells are very near each other, probably it's irrelevant but they occured at once when I switched power on

Paul-R

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Re: Peter Davey Heater
« Reply #325 on: June 24, 2008, 10:35:15 PM »
Thanks,but I only want it to be my casing. Inside I'd like to place a small bike bell.
I believe the bells should be the same so that the gap between them is constant.
The gap is an important variable.
Paul.

storre

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Re: Peter Davey Heater
« Reply #326 on: June 24, 2008, 10:45:34 PM »
I think if the bells are the same size and shape then the space will not be consistent throughout. If both bells are supposed to be tuned to the same frequency then the inner bell will have to be longer and skinnier to fit inside the outer bell. If they were cone shaped then it would be easier and the gap more consistent but it might effect the harmonics. I will be trying it both ways in about a week.

devrimogun

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Re: Peter Davey Heater
« Reply #327 on: June 25, 2008, 03:15:05 PM »
I think if the bells are the same size and shape then the space will not be consistent throughout. If both bells are supposed to be tuned to the same frequency then the inner bell will have to be longer and skinnier to fit inside the outer bell. If they were cone shaped then it would be easier and the gap more consistent but it might effect the harmonics. I will be trying it both ways in about a week.

According to the text we have tuning is for the inner bell only and then the distance from the outer bell. IMO
It makes some sense as the live wire is connected to the inner bell and the outer bell gets neutral connection.
Moreover ,I see no point in having two vibrations at the same time anyway. Just one vibration and a surface at the right
distance that the waves will be hitting and bouncing back.

storre

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Re: Peter Davey Heater
« Reply #328 on: June 25, 2008, 03:28:32 PM »
According to the text we have tuning is for the inner bell only and then the distance from the outer bell. IMO
It makes some sense as the live wire is connected to the inner bell and the outer bell gets neutral connection.
Moreover ,I see no point in having two vibrations at the same time anyway. Just one vibration and a surface at the right
distance that the waves will be hitting and bouncing back.

I agree and is how I will make my first tests. This way we can keep the space between the bells a little more consistent.

Does someone know what type of 220v they have in NZ? Where I'm at 220v is not like in the US. My electronic comes off the street pole as 4 wires. 1 neutral and 3 phases that are 126v each. So if I use a dual phase motor for example, each wire is a phase. Same for lighting 220v bulbs. In the US, if I'm not mistaken, it's 220v on one wire and the other is neutral. It seems it would make a difference in the functioning of this heater.

Paul-R

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Re: Peter Davey Heater
« Reply #329 on: June 25, 2008, 04:21:14 PM »
Does someone know what type of 220v they have in NZ?
It is 50 hz, according to these people:
http://www.newzealandnz.co.nz/new-zealand/electricity.html
Paul.